xwork-2.0.4官方提供的源码 。-xwork-2.0.4 from official source.

struts2核心源码，及struts2-core和xwork-core，一共三个版本，2.3.7、2.3.8、2.3.15.1-struts2 core source code, and struts2-core and xwork-core, a total of three versions, 2.3.7,2.3.8,2.3.15.1